OT Re: Math-embarrassment results in CS [was: Should non-security 2.7 bugs be fixed?]

[Paul Rubin]

Grant Edwards <invalid at invalid.invalid> writes:
>> Did you hear about the idiot topologist?  He couldn't tell his butt
>> from a hole in the ground, but he *could* tell his butt from two
>> holes in the ground.
>
> Wow.  Now I know _two_ topologist jokes.  The girls are going to be
> impressed!

I got it from here:

http://mathoverflow.net/questions/1083/do-good-math-jokes-exist